Removable driving equipment for cycles and cycles provided therewith



May 8, 1945. P. vERoTs ET AL 2,375,508

REMOVABLE muvme EQUIPMENT FOR CYCLES AND CYCLES PROVIDED THEREWITH' Filed May 21, 1942 pinionbeing shown insection. Fig. 4' is a longitudinal sectional view of said Patented May 8, 1945 UNITED T TES REMOVABLE" nRIVING EQmrMENT FOR CYCLES AND WITH Pierre vrotsyvilleurbanne. and Georges Mar- CIYCLES PROVIDED THERE- quet, Lyon,- France; vested in' thc Alien Property Custodian Application May 21, 1942',"

was... 443,970 I In France November :19, 1940 lClaims. (Cl.1 80 33) a bicycle of the usual type and also quickly rev moved therefrom; in such a manner that the cyclist may, at, will, either make use of it or leave it for using the bicycle in the usual manner Another object is to provide an equipment of reduced weight and bulk which willf not strain the frame. .'1

A further object is to provide an engined eiency both when driven by the. engine' or throughthe usual pedals.

Still other objects of the invention will appear from the following description of a preferred embodiment-thereof.

In the annexed drawing: Fig. 1 is a general side view of an embodiment of an equipment according to the invention;

Fig. 2 is a corresponding plan view, the petrol tank being omitted and the engine cylinder being'shown in section. 1 I Fig. 3 is a fragmentary side view of the rear wheel of the bicycle, showing the driving rim and the pinion straddling over said rim, said pinion and rim.

Fig. 5 is;a sectional detail of the rim' in a cycle of reduced weight and having good efii- L seco d of which is mounted on a shaft, 6 which protrudes rearwards of l lig'. 1, as willbe apparentffrom the plan viewl'of Fig.,2,andthe third of which is mounted on the shafts of an 'igriition' device 1 (Fig. 2), secured to a basefast with the case 2.

The assembly comprises fur-. ther a pet'rol tank 8 with its plug 59, the whole beingcarried by a supporting arm 9, secured to the case Z'by means of suitable bolts,.not.shown. The tank carries a carburettor lawman com.- municates with the engine [through an intake tube u. Last1y,' the engine I carries an ex-I haust pot l2 fast with the scribed assembly.

The Whole assembly is secured by means of two bolts I3 (Fig. 2). to 2'. square angle like whole of the defasjtening lug M to be attached. to the spindle of the rear Wheel ,W; having .the shaft W.v In

view of this attachment, insteadfof the usual nut securing the spindle to the frame {or the bicycle, there is provided a special nut-l5 (Figs.

' G and 7) which is in the shape of a sleeve provide'd with an external screw thread and with anle'nd flange or collar Hi. This nut I5, which may remain permanently on the bicycle, sinc e the normal use of the latter isnot hindered" thereby receives the lug 14, which is clamped against the flange 16, by means of a supplementary nut I! (Fig. 8). y

.As.wil1 be-apparent from Fig. 2,. the lug I4 is provided with elongated slots I8 through which the bolts is are adapted to pass, so as to permit of adusting the assembly axially of the shaft planeat right angles toone of the spokes of the wheel, so as to-show the securingmeans;

Fig; 6 is an end view of the flange nut on which the equipment is to be secured.

Fig. 7 is a part sectional flange nut.

Fig. 8 is a side view of the external-nut adapted to be screwed on said flange nut.

side view of said Figs. 9 and 10 are respectively side and end views of'the reaction clip secured to the zontal fork of the bicycle.

Fig. 11 shows a modified embodiment. The assembly shown in Fig. 1 comprises an horiengine proper l, of the two-cycle type in the, illustrated instance, the crank case of which is through the medium of the spokes thereof, each I spoke 24', (Fig. 5) being clamped underneath a small clamp 25, made of pressed sheet metal fast with another case 2 containing three intermeshing gears 3, 4 and 5, the first of which is mounted on the shaft S of the engine I, the

The partof the shaft 6 which protrudes f om.

theycase2 is p Ovided withsplines 6 and'is adapted to receive a pinion, which has been I omitted in Fig. 2 but details of which are shown in Figs. Sand 4. Said pinion consists of two cheeks I9, fast with a common splined hub 20, said cheeks carrying fixed pins 2| supporting rollers 22 which are loose thereon the whole forming thus a lantern pinion with rotatable pins. The pinion |920-2I-.-22 gears with an inner set of teeth 23 provided on a rim 23' at-- tached to the rear wheel W, the cheeks l9 straddling over the said set of teeth (Fig. 4) for maintaining axially the pinion on its shaft 6.

The rim 23 is attached to the rear wheel W and tightened by a screw 26, the spoke being moreover maintained between the stem of the screw 26 andaturned down flange oi theclamp Between the gear along. 1) and its shaft 6 (Fig; 2) r, is preferably. provided. a claw-clutch of any suitable type, suchas a sliding dog collar clutch the slide. collar ofiwhichmay he. oP6Iated from the outside, by means oi ,a small handle; :such as; 21 (Figshlan'd 2). This device permits of with the drivingequipment and the latter is not in running condition. 1

1 I The lug I4 is extendedby an arm 28 terminating in a, fork 29. The latter is adapted 1 2,375,508 to V tages, some of these arrangements might be omitted or replaced by others affording the same gen- 1 .eral results. 7

I the bicycle being rolled freely when itis provided.

to engage with a flange stud (Figs. ,1, :9. anctlO) I which is one of the bolts modi ies-permanently fastening a clip 3| to the horizontal fork 32 of the cycle. "The engine, assembly is thus retained in' position and is prevented from turningi'round the rear spindle even in case the nut'1l would" 1 have not been suificlently tightened,

It will be apparent that the engine c an,be

'llgjwithout it being necessary to tamper either withfthe pipingsgor with the transmission, since im'ovedwhen'desired by'simply taking oifthe nut from? the shaft 1i and thereafter removed from i i "theirim123honwhich itremains resting, i 1

': Itwiilthus' be apparent that the inventionproivides mea'ns toconvert qui'cklyfa bicycle into a l'ightmotor cycleby s'crewing e; single nut, viz the I 'nuftru 1;: the driven cycle? differing 'from' anordi- H nary :cy'clef; only" by the provision: of the "rim 23 I Kwhicnmaybe made-very light inweig'ht-by using light alloys) {and ofthe'small and hardlyvisible Referring term. 11; "the m-ramming an extension of the eng'ine suppont is connected with the-11mins!ofthe-horizontarfork eff theb'icycle rearwheel by means of a semi-elastic coupling. Folf jtlli's purpose 'this arm 28" terminates in a perioratediugslidingalbrrgacurved rodflfl'which v 1 i's secured to the clip 3 land maintained in'posit money two counteracting-springsifl'andl3coileii arodnd'saidrod onieither-s'ide-of the armZili'" springs serve asfasuspensiorr damper anddampthe vibrations which are thus preventedt'from-being-transmitted tothe'- frame.v

of bolt to the rearluggage carrying-bracket cr me machine. y

f bidously; the"-foregoizig-description is not; to

beconstrued asdimitingin-anymannerthe-ambit of theinvention, as the described details'there'of may be replaced by any equivalent means with I out-vdeparting-drointhe spirit of the invention. 7 whileean the-arrangements shown and described eo-operate to carry out an improved drivingras sembly; :atfondingthe; above-mentioned "advan-v ing and having a drivingfshait journaledtinsaid casing a, drivenflshaf t journaled int said Leasing What we claim-is: i 1. In vdriving equipment for a cycle, the combinationv of abracket adapted, to beilremovably mounted on the'spindlefpf a traction wheelof the cycle; an arm extending from said bracket and provided on its ;end with a fork; a stud "mounted on the frame of the cycle and received :m.:said foflr-iaxcasingdepending from said brack-r 'et, l driving means; carried by said casing; and

means actuated by said driving'means adapted f torotatesaidtraction Wheel. I e v 2. drivinggeqiiipment for a cycle; the combinatiom of: arring gear on one oi the traction'wheels of the cycle; a

bracket; .removably mounted on the spindle of saidiwheel'; a drivenshaft supported by said bracket parallel with the shaft of said wheel,

and adjustable axially of said' wheel shaft a pinion splin'edzon [said driven shaft'j for movement axially" thereof; and-adapted to mesh with said gear; when the driven shaft is in any one of. its

' bination of a ring gear mounted concentrically on oneof thetraction wheels of the, cycle; a.'lantern pinion n es hing'with' said ring gear, and'pro- Vi'dGdWit'h' a pair of peripheral cheeks loosely ei'nbr'avcirrg the periphery of said ring gear; adriv en shaft on which saidpinion. is s'lidably .splined;

- a bracket removably mounted on the, spindleflof I wheel; s npporting' ,means fonsaid shaft mountedionsaid bracket, and adjustable ex 1a11 of said pinion; and meansimounted' on supporting means for driving said-shaft] 4'. In driving, equipment fora .cycle', the com- I 'binationofi'aj casing; amot'or ,carried by said pas..-

vand '1'oplera'tively' connected "with ,saidigdriving shaft: a plate having apairpi slots; a pair of- Fu'rther; as showrr'in thesame 'iigurejthe petrol 1 tame B is locatedata higher: levelthan 'the--'engine block and is removably hooked, by'nreans headed bolts disposed. throngh said 'slotsahd received in said. casing, theinheadsbear'ing; on: said plate, whereby the, casing. is secured; to and depends from said; plate; an, upstanding flange on said, plate having an; orifice therein; atnut adapted" to secure the spindle of v attraction wheel of the cycle to the frameof thetcycle, said nut'hav ing a; threaded sleeve .receivednthrough said or-ificegfa second nut vco-ioperatin'lg with 'saidi-sleeve to fasten said plate. flange on said-first mentioned :5 gear concentrically' mounted one said traction nut; la pin-ion onisaidxdri-ven-shaf ti and a: ring wheel, and meshing with said-pinion.

'GEQRGES mounted concentrically iiii'stedpositions; and means for. driving said m e s; j, 

